package com.community.windy.controller;

import com.community.windy.entity.User;
import com.community.windy.service.UserService;
import com.community.windy.util.CommunityConstant;
import com.community.windy.util.CommunityUtil;
import com.community.windy.util.RedisKeyUtil;
import com.google.code.kaptcha.Producer;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import javax.imageio.ImageIO;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Controller
public class LoginController implements CommunityConstant {

    private static final Logger logger = LoggerFactory.getLogger(LoginController.class);

    @Autowired
    private UserService userService;

    @Autowired
    private Producer kaptchaProducer;

    @Autowired
    private RedisTemplate redisTemplate;

    @Value("${server.servlet.context-path}")
    public String contextPath;

    @GetMapping("/login")
    public String getLoginPage(){
        return "/site/login";
    }

    @GetMapping("/register")
    public String getRegisterPage(){
        return "/site/register";
    }

    @PostMapping("/register")
    public String register(Model model, User user){
        Map<String,Object>  map = userService.register(user);
        if (map == null|| map.isEmpty()){
            model.addAttribute("msg","注册成功。我们已向您的邮箱发送了一封激活邮件，请尽快激活");
            model.addAttribute("target","/index");
            return "/site/operate-result";
        }else {
            model.addAttribute("usernameMsg",map.get("usernameMsg"));
            model.addAttribute("passwordMsg",map.get("passwordMsg"));
            model.addAttribute("emilMsg",map.get("emilMsg"));
            return "/site/register";
        }
    }
    @GetMapping("/activation/{userId}/{code}")
    public String activation(Model model, @PathVariable("userId")int userId,@PathVariable("code") String code){
        int res =  userService.activation(userId,code);
        if (res == ACTIVATION_SUCCESS){
            model.addAttribute("msg","激活成功，您的账号已经可以使用了！");
            model.addAttribute("target","/login");
        }else if (res == ACTIVATION_REPEAT){
            model.addAttribute("msg","无效的操作！该账号已经激活过了");
            model.addAttribute("target","/index");
        }else {
            model.addAttribute("msg","激活失败，您的激活码不正确");
            model.addAttribute("target","/index");
        }
        return "/site/operate-result";
    }

    @RequestMapping(path = "/kaptcha",method = RequestMethod.GET)
    public void getKaptcha(HttpServletResponse response, HttpSession session){
        //生成验证码
        String text = kaptchaProducer.createText();
        BufferedImage image = kaptchaProducer.createImage(text);
        //将验证码存入session
        // session.setAttribute("kaptcha",text);
        //验证码存入redis
        //1、验证码的归属
        String kaptchaOwner = CommunityUtil.generateUUID();
        Cookie cookie = new Cookie("kaptchaOwner",kaptchaOwner);
        cookie.setMaxAge(60);
        cookie.setPath(contextPath);
        response.addCookie(cookie);
        //2、将验证码存入redis
        String redisKey = RedisKeyUtil.getKaptchaKey(kaptchaOwner);
        redisTemplate.opsForValue().set(redisKey,text,60, TimeUnit.SECONDS);

        //将图片输出到浏览器
        response.setContentType("img/png");
        try {
            OutputStream os = response.getOutputStream();
            ImageIO.write(image,"png",os);
        } catch (IOException e) {
           logger.error("响应验证码失败"+e.getMessage());
        }
    }

    @PostMapping(value = "/login")
    public String login(String username,String password,String code,boolean rememberme,Model model,
        /*HttpSession session,*/HttpServletResponse response,@CookieValue(value = "kaptchaOwner",required = false) String kaptchaOwner){
        //检查验证码
        //String kaptcha =(String)session.getAttribute("kaptcha");
        String kaptcha  = null;
        if (StringUtils.isNotBlank(kaptchaOwner)){
            String redisKey = RedisKeyUtil.getKaptchaKey(kaptchaOwner);
            kaptcha =(String)redisTemplate.opsForValue().get(redisKey);

        }
        if (StringUtils.isBlank(kaptcha)||StringUtils.isBlank(code)||!kaptcha.equalsIgnoreCase(code)){
            model.addAttribute("codeMsg","验证码不正确");
            return "/site/login";
        }
        //检查账号。密码
        int expiredSeconds = rememberme?REMEMBER_EXPIRED_SECONDS:DEFAULT_EXPIRED_SECONDS;
        Map<String,Object> map = userService.login(username,password,expiredSeconds);
        if (map.containsKey("ticket")){
            Cookie cookie = new Cookie("ticket",map.get("ticket").toString());
            cookie.setPath(contextPath);
            cookie.setMaxAge(expiredSeconds);
            response.addCookie(cookie);
            return "redirect:/index";
        }else {
            model.addAttribute("usernameMsg",map.get("usernameMsg"));
            model.addAttribute("passwordMsg",map.get("passwordMsg"));
            return "/site/login";
        }
    }



    @GetMapping(value = "/logout")
    public String logout(@CookieValue("ticket")String ticket){
        userService.logout(ticket);
        SecurityContextHolder.clearContext();
        return "redirect:/login";
    }

}
